Numbers: prime or choice?
Article Abstract:
Positive real integers may be equated with another number of equal value by multiplying small integers called factors. Those numbers that have only two factors, including one and itself, are termed as prime and can be extracted through a systematic scheme developed by Erathosthenes.
Publication Name: Scientific American
Subject: Science and technology
ISSN: 0036-8733
Year: 1998
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Head start on the 20th century
Article Abstract:
A physicist believes the discovery of X-rays in Jan 1896 was the true beginning of innovations in physics. Researchers began experimenting with the X-rays, leading to further discoveries, including that of radium by Marie Curie. Electrons were discovered in 1899.
Publication Name: Scientific American
Subject: Science and technology
ISSN: 0036-8733
Year: 1996
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Air-cooled
Article Abstract:
Various aspects of air cooling is presented, from its use in air-conditioning systems to its profound effects on sports performance. The human body was meant to exploit air cooling, as shown by various interpretation of perspiration.
Publication Name: Scientific American
Subject: Science and technology
ISSN: 0036-8733
Year: 1997
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